A modern day super-activist, Executive Director and co-founder of One Jamie Drummond's adversaries are global poverty, hunger, climate change, AIDS and other infectious diseases. His mission is literally to help save millions of lives.

In a much more geographically diverse region where water itself is already a precious commodity, Buffett feels adamant that teaching the world to farm like Americans is not the answer. The secret lies in working with the earth rather than against it.

New statistics paint a horrific picture of hunger in America. According to the USDA, an estimated 50 million Americans are food insecure, including nearly 17 million children. This is morally reprehensible.